AI Appraisal Estimate

This item is a single stud earring featuring a vibrant, princess-cut gemstone held between two fingers. The gemstone exhibits a deep teal or 'London Blue' hue, characteristic of treated topaz, and appears to be approximately 1.5 to 2 carats based on visual scale. It is secured in a white metal basket setting, likely 14k white gold or sterling silver, utilizing a classic four-prong design. The prongs are positioned at each corner of the square cut to maximize security while allowing light to penetrate the stone's pavilion. The gemstone displays a modern step-cut or brilliant-cut faceting pattern that catches the light with moderate dispersion. While the image resolution is limited, the stone appears to have excellent clarity with no visible inclusions to the naked eye. There are no obvious signs of surface abrasion or chipping on the crown or table. The style is contemporary and minimalist, typical of jewelry manufactured within the last 20 years. The setting shows a high-polish finish with no significant tarnish or metal fatigue visible on the frontal prongs, suggesting well-maintained quality or recent production. The overall craftsmanship appears solid, with symmetrical prong placement consistent with commercial-grade fine jewelry.

I have conducted a visual examination of the single princess-cut stud earring. The center stone displays the saturated, dark teal-blue color synonymous with London Blue Topaz, likely achieved through stable neutron bombardment/heat treatment. Based on scale, the stone is estimated at 1.75 carats. The white metal setting appears to be high-quality 14k white gold based on its luster and commercial finish, though no hallmarks are visible in the image. The condition is excellent, showing no significant facet wear or table abrasions. This item reflects a contemporary, mass-market fine jewelry style with high liquidation potential due to its classic design. Demand for London Blue Topaz remains steady as an affordable alternative to blue sapphire, though it is not considered rare. The secondary market for single earrings is generally 30-40% lower than matching pairs. My valuation assumes a gold setting rather than sterling silver; if the metal is silver, the value would decrease to approximately $45-$60. Limitations: A definitive appraisal requires physical inspection. Without an in-person examination, I cannot verify metal purity via acid or XRF testing, nor can I confirm the gemstone is natural topaz rather than synthetic spinel or glass without refractive index and microscopic analysis. Provenance or a manufacturer's mark would further refine the brand-specific value.